Invention Grant
- Patent Title: Hot-press formed product and method for manufacturing same
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Application No.: US14372126Application Date: 2013-03-15
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Publication No.: US09611518B2Publication Date: 2017-04-04
- Inventor: Junya Naitou , Toshio Murakami , Shushi Ikeda , Keisuke Okita
- Applicant: Kobe Steel, Ltd.
- Applicant Address: JP Kobe-shi
- Assignee: Kobe Steel, Ltd.
- Current Assignee: Kobe Steel, Ltd.
- Current Assignee Address: JP Kobe-shi
- Agency: Oblon, McClelland, Maier & Neustadt, L.L.P.
- Priority: JP2012-059447 20120315
- International Application: PCT/JP2013/057468 WO 20130315
- International Announcement: WO2013/137453 WO 20130919
- Main IPC: C21D9/00
- IPC: C21D9/00 ; B21D22/20 ; C22C38/00 ; C22C38/02 ; C22C38/04 ; C22C38/06 ; C22C38/28 ; C22C38/32 ; C21D6/00 ; C21D8/02

Abstract:
Provided is a hot-press molded article that can achieve a high level of balance between high strength and extension by region and has a region corresponding to an energy absorption site and a shock resistant site within a single molded article without applying a welding method by means of having first region having a metal structure containing both 80-97 area % of martensite and 3-20 area % of residual austenite, the remaining structure comprising no more than 5 area %, and a second region having a metal structure comprising 30-80 area % of ferrite, less than 30 area % (exclusive of 0 area %) of bainitic ferrite, no greater than 30 area % (exclusive of 0 area %) of martensite, and 3-20 area % of residual austenite.
Public/Granted literature
- US20150000802A1 HOT-PRESS FORMED PRODUCT AND METHOD FOR MANUFACTURING SAME Public/Granted day:2015-01-01
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